Astilbe glauca

'Pincushion' allium is the kind of plant that just sits up straight and looks sharp — it's got these straight, sturdy foliage and flower stems that give it a really neat, upright look. Being small and clumping, this summer-blooming allium is perfect for containers and garden edges. And it blooms like crazy, pumping out masses of bright purple flower heads starting in late summer. Bees and butterflies go wild for them, while the onion-scented foliage does a nice job of keeping rabbits and deer at bay.

So how does 'Pincushion' stack up against other alliums? For starters, its flowers are darker than 'Summer Beauty', 'Lavender Bubbles', and 'Millenium'. It's also a more compact plant than 'Summer Beauty' and 'Millenium', and its leaves are noticeably stiffer than your typical clumping allium — which gives it a really tidy look. It also has plenty of strong flower stems that keep those flower heads standing proud the whole time they're blooming.

Common name: 'Pincushion' allium

Botanical name: Allium 'Pincushion'

Origin: This is a hybrid allium introduced by Walters Gardens in 2024 — the new kid on the block.

Flowers: They appear from late summer into autumn, in rounded heads of tiny orchid-purple florets. Even after the flowers fade, they keep looking good well into fall.

Foliage: Long, narrow leaves in deep green with a hint of blue and a very slight twist. They're stiffer than other comparable alliums, which gives the plant a tighter, more upright look.

Size and habit: 'Pincushion' grows as a tidy upright clump just over a foot tall and wide. The foliage emerges in spring and sticks around through fall before yellowing and dying back.

Growing 'Pincushion' allium

Exposure: Full sun to part shade

How to grow it: Honestly, clumping alliums like 'Pincushion' are about as easy-going as it gets. They need low to moderate water and a spot in part shade or sunnier — not picky at all. Unlike bulbous alliums, this type grows from a mass of rhizomes that you can easily divide in spring. While some alliums like to scatter seed around the garden, 'Pincushion' reportedly doesn't, so you can let the seed heads stand for winter interest without worry. Just clean up the previous year's growth in early spring. USDA Zones 4–8.